Merge pull request #800 from talentdeficit/extract_path_utils

extract `retarget_path/2', `relative_path/2' and `reduce_path/1' and add tests

1 files changed, 33 insertions, 5 deletions

diff --git a/test/rebar_dir_SUITE.erl b/test/rebar_dir_SUITE.erl
index 6fbc081..a9e44db 100644
--- a/test/rebar_dir_SUITE.erl
+++ b/test/rebar_dir_SUITE.erl
@@ -5,6 +5,7 @@
 -export([default_src_dirs/1, default_extra_src_dirs/1, default_all_src_dirs/1]).
 -export([src_dirs/1, extra_src_dirs/1, all_src_dirs/1]).
 -export([profile_src_dirs/1, profile_extra_src_dirs/1, profile_all_src_dirs/1]).
+-export([retarget_path/1]).
 
 -include_lib("common_test/include/ct.hrl").
 -include_lib("eunit/include/eunit.hrl").
@@ -13,16 +14,22 @@
 
 all() -> [default_src_dirs, default_extra_src_dirs, default_all_src_dirs,
           src_dirs, extra_src_dirs, all_src_dirs,
-          profile_src_dirs, profile_extra_src_dirs, profile_all_src_dirs].
+          profile_src_dirs, profile_extra_src_dirs, profile_all_src_dirs,
+          retarget_path].
 
 init_per_testcase(_, Config) ->
     C = rebar_test_utils:init_rebar_state(Config),
     AppDir = ?config(apps, C),
 
-    Name = rebar_test_utils:create_random_name("app1_"),
-    Vsn = rebar_test_utils:create_random_vsn(),
-    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
-    C.
+    Name1 = rebar_test_utils:create_random_name("app1_"),
+    Vsn1 = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(filename:join([AppDir,"apps",Name1]), Name1, Vsn1, [kernel, stdlib]),
+
+    Name2 = rebar_test_utils:create_random_name("app2_"),
+    Vsn2 = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(filename:join([AppDir,"apps",Name2]), Name2, Vsn2, [kernel, stdlib]),
+
+    [{app_one, Name1}, {app_two, Name2}] ++ C.
 
 end_per_testcase(_, _Config) -> ok.
 
@@ -97,3 +104,24 @@ profile_all_src_dirs(Config) ->
 
     R = lists:sort(["foo", "bar", "baz", "qux"]),
     R = lists:sort(rebar_dir:all_src_dirs(rebar_state:opts(State))).
+
+retarget_path(Config) ->
+    {ok, State} = rebar_test_utils:run_and_check(Config, [], ["compile"], return),
+
+    BaseDir = rebar_dir:base_dir(State),
+
+    Name1 = ?config(app_one, Config),
+    Name2 = ?config(app_two, Config),
+
+    ?assertEqual(filename:join([BaseDir, "lib", Name1, "test"]),
+                 rebar_dir:retarget_path(State, filename:join([rebar_dir:root_dir(State), "apps", Name1, "test"]))),
+    ?assertEqual(filename:join([BaseDir, "lib", Name2, "test"]),
+                 rebar_dir:retarget_path(State, filename:join([rebar_dir:root_dir(State), "apps", Name2, "test"]))),
+    ?assertEqual(filename:join([BaseDir, "lib", Name1, "more_test"]),
+                 rebar_dir:retarget_path(State, filename:join([rebar_dir:root_dir(State), "apps", Name1, "more_test"]))),
+    ?assertEqual(filename:join([BaseDir, "test"]),
+                 rebar_dir:retarget_path(State, filename:join([rebar_dir:root_dir(State), "test"]))),
+    ?assertEqual(filename:join([BaseDir, "some_other_dir"]),
+                 rebar_dir:retarget_path(State, filename:join([rebar_dir:root_dir(State), "some_other_dir"]))),
+    ?assertEqual("/somewhere/outside/the/project",
+                 rebar_dir:retarget_path(State, "/somewhere/outside/the/project")).
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